US1176301A - Method of making connecting-rods. - Google Patents

Method of making connecting-rods. Download PDF

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Publication number
US1176301A
US1176301A US2372915A US2372915A US1176301A US 1176301 A US1176301 A US 1176301A US 2372915 A US2372915 A US 2372915A US 2372915 A US2372915 A US 2372915A US 1176301 A US1176301 A US 1176301A
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United States
Prior art keywords
rod
bosses
forming
blanks
larger
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Expired - Lifetime
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US2372915A
Inventor
Hebron B Layman
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LAYMAN PRESSED ROD CO Inc
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LAYMAN PRESSED ROD CO Inc
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Priority to US2372915A priority Critical patent/US1176301A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/02—Constructions of connecting-rods with constant length
    • F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/08—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads made from sheet metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49288—Connecting rod making
    • Y10T29/4929—Connecting rod making including metallurgical bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2142—Pitmans and connecting rods
    • Y10T74/2153—Sheet metal type

Definitions

  • the invention consists in the method hereinafter described of stamping or forming a connecting rod from a blank or blanks of sheet metal, said rod being divided centrally and longitudinally intov two separate similar parts conibined'to form a complete and oper- V ative whole of the desired form and dimensions, and in the method of finishing said rod as herein described.
  • FIG. 2 is a section through the small end of the rod half shown in Fig. 2;
  • Fig. 3 a view similar to Fig. 2 showing the third step in the, process;
  • .Fig. 4 an outside view of the half of a rod shown in Fig. 3 and indicating the fourth step in the process;
  • Fig. 5 an outside view of the half of a rod shown in Fig. 4 and showing the fifth step in the process Fig. 5 a cross section on the line 5-5 of Fig. 5;
  • Fig. 7 a view similar to Fig.
  • Fig. 8 a side view of the'rod shown in Fig. 7 and showing the eighth step in the process; and, Fig. 8 shows a detailed construction of the smaller end and itis more particularly referred to hereafter; Fig. 9 a view similar to Fig. 8 and showing the ninth step in the process.
  • Fig. 2 I show the small end of the blank of Fig. 2 but having the hole just referred to
  • the third step of the process is shown in Fig. 3 and consists in forming a channel in one side of the shank portion a and a cor responding rib bon the other side
  • a set screw boss 6 Fig. .4 is also formed in the smaller end of the blank and and a, and this step, if desired, may be cess to the bottom of the hole in the boss avhe'n the piston is assembled upon the rod.
  • step'of the process simply consists in forming a flange c which, as shown, extends entirely around the half'
  • the separate steps of the process shown in-Figs. l and ,5 may, if desired, be combined and performechin one of the rod in Fig. o.
  • Fig. 7 The next step of the process is shown in Fig. 7 and consists in assembling the two halves of the rod upon the sleeve bearings I] and (Z and .the set screw bushing (Z then fitting in the flange bushings (Z shown in the larger end of the rod in Figs. 7 and 8. At this time the halves of the rod are spot welded together, or riveted as shown at (l in Fig,
  • Fig. 8 the rod is shown fitted with washers (Z at the cap end of the bolt bosses and washers (Z at the-rcd end of the bolt bosses. In the former case the washers are,
  • the last operation in forming the rod is the sawingthe larger end thereof transversely to form ⁇ the cap portion 6 as shown in Fig. 9.
  • the cap is shown cut from the red but assembled to the rod with shims and bolts a in the conventional manner.
  • a connecting rod may be made ofsteel blanks at much less expense than has heretoforebeen possible, and a rod so made will possess greater strength than any rod of the same dimensions and weight made by any other process.
  • piston pin and crank pin bosses con: nectingthe separate arts of the rod, and sawing the larger en portion transversely.
  • The-process herein described of forming, a connecting rodfrom sheet metal and consisting of two similar blanks, which consists in stamping out the-blanks of the desired form and involvin a central shank portionyandsmaller an larger end portions forming piston pin and crank pin bosses on said end portions, piercing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Description

Q Ui/t new: 4 5) mum H301 W 7 Hebrorz BLa /mmb, Y
J 4 jb %1 his 6145 501014 H. B. LAYMAN.
METHOD OF MAKING CONNECTING RODS.
APPLICATION FILED APR.24. ms 9 9 Patented Mar. 21,1916.
2 SHEE I.
TS-SHEET u "HI H l a ,nl 1W ,1 In n M H. B. LAYMAN,
METHOD OF MAKING CONNECTING RODS.
, APPLICATION FILED APR.24, I915. wwm.
Patented Mar. 1916.
2 SHEETS-SHEET 2.
unrrnn srarns rarnrir orricn.
' HEBRON ZB/LAYMAN, OF NEW YORK, N. Y., ASSIGNOR TO THE LAYMAN PRESSED ROD CO., INCL, OF NEW YORK, N. Y. A CORPORATION OF NEW YORK.
METHOD OF MAKING CONNECTING-RODS.
Specification of Letters Yatent.
Patented Mar. 2i, iaie.
Application filed April 24, 1915. Serial No. 23,729.
To all whom it may concern Be it known that I, HEBRON B. LAYMAN,
a citizen of the United States, and residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in the Method of Making connectin'grftods, of which the following is a specification, such as will enable those skilled in the art to tion engines where'great strength in proportion to the weight of metal employed is re-.
quired, but my improved connecting rod is not limited to such use but maybe'employed wherever connecting rods are required; and my invention relates more particularly to connecting rods made-of, or
from, sheet metal, particularly steel, and the invention consists in the method hereinafter described of stamping or forming a connecting rod from a blank or blanks of sheet metal, said rod being divided centrally and longitudinally intov two separate similar parts conibined'to form a complete and oper- V ative whole of the desired form and dimensions, and in the method of finishing said rod as herein described.
The invention is fully disclosed in the following specification, of which the accompanying drawingsform a part, in which I have shown the successive steps of the'process employed by me for forming a connecting rod according tomy invention, and in which the separate parts are designated by suitable reference characters in each of the views, and in which l Figure 1 is a view of a blank from which one-half of my improved connecting rod is formed; Fig. 2 an edge view showing the.
first step of my improved process;'Fig. 2" is a section through the small end of the rod half shown in Fig. 2; Fig. 3 a view similar to Fig. 2 showing the third step in the, process; .Fig. 4 an outside view of the half of a rod shown in Fig. 3 and indicating the fourth step in the process; Fig. 5 an outside view of the half of a rod shown in Fig. 4 and showing the fifth step in the process Fig. 5 a cross section on the line 5-5 of Fig. 5; Fig. 6a sectional viewon the line 66 of Fig.5 andshowing the sixth step in the process; Fig. 7 a view similar to Fig. 6 but showing both halves of the rod con-- nected and showing also the seventh step in the. process; Fig. 8 a side view of the'rod shown in Fig. 7 and showing the eighth step in the process; and, Fig. 8 shows a detailed construction of the smaller end and itis more particularly referred to hereafter; Fig. 9 a view similar to Fig. 8 and showing the ninth step in the process.
For the purpose of. this description the end of the connecting rod which is connected with the crank shaft of the engine will be called thelarger end, while the end that is connected with the piston will be called the smaller end- In the practice oftmy invention, I stamp from a'suitablesheet of metal, preferably steel, the blank shown at a in Fig. 1, said blank being provided with a smaller end a to the smaller. end, and two of said blanks are employed. The next step in the process,
consists in forming on one side of the smaller end aboss a and on the larger end a correspondi'ngbut larger boss a, the edges of which are crimped or-folded inwardly slightly as indicated-at at. These two steps of the process, namely, the cutting of the 5" blank a and the formation of the bosses g and a may be performed at'a single contin nous operation, or at 'two separate operations in a suitable die or press. In some instances, the depth of the bosses a and a is so'great a's to necessitate redrawing. In some instances where the bosses are very deep I pierce a. hole a in the blank at a point to correspond with. the bottom of the boss tobe drawn as shown in Fig. 2 and this very materially reduces the tendency to stretch the metal in drawing the bosses. In Fig. 2 I show the small end of the blank of Fig. 2 but having the hole just referred to The third step of the process is shown in Fig. 3 and consists in forming a channel in one side of the shank portion a and a cor responding rib bon the other side At this time a set screw boss 6 Fig. .4, is also formed in the smaller end of the blank and and a, and this step, if desired, may be cess to the bottom of the hole in the boss avhe'n the piston is assembled upon the rod.
In the above described operation the radial side ribs Z1 in the larger end are also formed.
The above step'of the process, as will be I simply consists in forming a flange c which, as shown, extends entirely around the half' The separate steps of the process shown in-Figs. l and ,5 may, if desired, be combined and performechin one of the rod in Fig. o.
single operation.
The step of the process shown in Fig. 6
consists, simply in piercing or cutting out or cutting off the bottoms of the bosses a" combined with the fourth step of the process shown or indicated in Fig. l, and which is also a trimming operation.
, The next step of the process is shown in Fig. 7 and consists in assembling the two halves of the rod upon the sleeve bearings I] and (Z and .the set screw bushing (Z then fitting in the flange bushings (Z shown in the larger end of the rod in Figs. 7 and 8. At this time the halves of the rod are spot welded together, or riveted as shown at (l in Fig,
8, or brazed or otherwise secured together. In some instances the friction of the rodhalves upon the bushings (Z and (Z is alone sufficient to retain the halves in place.
B 'azing together the elements of the rod lends a value that is not obtainable througo riveting or spot welding alone, for the spelter, besides thoroughly uniting the ele ments, serves to fill the niches and unevennesses which occur informing the several pieces.
In Fig. 8 the rod is shown fitted with washers (Z at the cap end of the bolt bosses and washers (Z at the-rcd end of the bolt bosses. In the former case the washers are,
fiat to allow the nut to turn, whereas in the latter case' the washers are bent, upwartb on one side to prevent the bolt from turning. All of these washers have extending edges which are bent around the flange 0 so as to retain them in place and prevent-the spreading of the rod-halves at this point. i i I have previously pointed out that I prefer to braze the rods and this bra ing occurs after the rods are put in the condition shown in Fig. 8.
Sometimes after brazing it is necessary to straighten the rods to correct any warpage that may occur through the heat of brazing. After brazing the rods are generally nickelplated; then occur the machining operations when such are necessitated. In some cases the bushings in the larger and smaller ends are reamed and the set screw bushing d is drilled and tapped for the set screw as shown in Fig. 8*. Also in some cases it-is desirable to ream the bolt bosses in the larger end of the rod.
Generally, the last operation in forming the rod is the sawingthe larger end thereof transversely to form \the cap portion 6 as shown in Fig. 9. In this figure the cap is shown cut from the red but assembled to the rod with shims and bolts a in the conventional manner.
It should be clearly understood that I am not liurited to the arrangement of bushings \shown; for example, I might eliminate Where I usethe term piercing in rela tion to the trimming off or cutting out of the bottoms of t e bosses a and a I mean to signify only hat the bottoms of these bosses are cut out, I do not bind myself to any specific means for, or manner of, trimming these bosses, or the bottoms thereof. While I have referred in this specification to sawing the larger end of the rod transversely to form a cap it will be understood that this sawing or dividing of the larger end to form a cap is not necessary at all times, and especially when the smaller class ofrods are being made which are frequently formed Withoutcaps, and tliat instead of forn'iing one rod at a time, as herein shown and described, I may ,form two rods with the larger ends at the c'dnter and then saw said larger ends t 'ansver'sely to separate the rods and then form-or provide thejcap for each rod when desired.
By means of my invention a connecting rod may be made ofsteel blanks at much less expense than has heretoforebeen possible, and a rod so made will possess greater strength than any rod of the same dimensions and weight made by any other process. I
IVhile I have shown and described the preferred steps of my improved process for making connecting rods and the order of said steps, my invention is not limited to this exact order, and changes therein and modifications thereof may be made within the scope of the appended claims, without 1. The-process herein described of form inga connecting rod from sheet metal and consisting of two separate longltudmal parts formed from separate similar. blanks, v
which consists in stamping out the blanks of the-desired form and involving acentral shank portion andsmaller and larger end portions forming piston and crank pin bosses on said end portions, forming bolt bosses in the larger end portion, piercing,
said piston pin and crank pin bosses, con: nectingthe separate arts of the rod, and sawing the larger en portion transversely.
2. The process herein described of forming a connecting rod from sheet metal and consisting of two separate longitudinal parts formed from separate similar blanks, which consists in stampingout the blanks of the :1
desired form andinvolvinga central shank portion and smaller and larger end portions forming piston andpcra'nk pin bosses 'on said end portions, forming bolt bosses in the larger endportion, piercing said piston pin and crank 'pin bosses, connecting the separate parts of the rod, brazing the complete rod thus formed, and. sawing the larger end portion transversely.
3. The process herein described of forming aconnecting rod from sheet metal and consisting of two similar parts formed from similar blanks which consists in stamping out the blanks ofthe desired form andjin-- volving the central shank portions and smaller and larger end portions, forming piston pm and crank pin bosses on said ends, ribbing the shank portion andforming bolt bosses inthe larger end portion, piercing I the said piston pin and crank pin bosses,
connecting the separate parts of the rod, and
sawing the larger end portion transversely.
4. The process herein described of forming a connecting rod from sheet metal and consisting of two similar blanks, which consists in stamping out the blanks of the desired form and involving a central'shankportion and smaller and larger end portions, forming piston pin and crank pin bosses on said end-.portions, ribbingthe shank portion and forming bolt bosses in the larger end portion,. flanging the side edges of the blank. and p'iercing the said piston pin and crank pin bosses, connecting the separate parts ofthe rod and sawing the,
larger endportion transversely.-
5. The process herein described of forming a connecting rod fromsheet metaland sists in stamping "out the blanks of the-de- "siredtorm and involving a central'shank consisting of two similar blanks, which con 'ver'sely.-;- 8. The process herein described-of .for'ming a'connecting rod from sheet metal and consisting of two similar blanks, which" consists in stamping out the blanks of'the desired formand involving a central shank portion and smallerand'larger end portions, formin piston pin and crank pin bosses on said en portions, ribbing the shank portion and forming bolt bosses in both end portions, .piercing the said piston pin and crank pin bosses, connectingthe separate parts of the rod and-sawing the larger end portion transverselyn 1 1 7. The-process herein: described of forming, a connecting rodfrom sheet metal and consisting of two similar blanks, which consists in stamping out the-blanks of the desired form and involvin a central shank portionyandsmaller an larger end portions forming piston pin and crank pin bosses on said end portions, piercing. said bossesandribbing the shank portion, forming bolt 'bosses"in the larger-end portion, 'and'saW1ngtl1e larger end portion transc'onsistingof twosimilar blanks, which consists in stamping out the blanks of the desirednform' and involving a central shank portion and smaller .'and larger end por-- tions, forming piston pin and crank pin bosses on said endv-portions, ribbing the shank portion and forming bolt bosses in the larger'end portion, flanging the side 7 edgesof theblank and piercing the said piston pin and-crank pin bosses, connecting the separate parts of the rod, brazingfsaid rod, and sawing the larger end portion transversely; i
9,.The process herein described of forming a connecting rod from sheet metal and consisting of two similar blanks, which conportion and forming bolt bosses in the larger end portion, piercing the said piston p n and crank p1n bosses, connecting the separate parts of the rod, brazing said rod,
securing sleeve bearings in said bosses, and
sawing the larger end portion transversely.
10. The process herein described of forma connecting-rod from two substantially sists in stamping out the blanks of the desimilar sheet metal parts, which consists in 4 suitably fashioning the parts and providing the ends with integral perforated bosses, connecting the two parts, and separating the two parts transversely of the axis of one of the bosses to form a cap.
11. The process herein described of form ing a connecting rod from twosubstantially similar sheetmetal parts, which consists in fashioning the parts to the desired form and involving a central shank portion and smaller and larger end port1ons,-form1ng integral perforated bosses in said end portions, connecting the two parts of the rod,
and separating the larger end portions trans- 15' versely of the axis of the boss, to form a cap. In testimony that I claim the foregoing as my invention I have signed my 'name in presence. of the subscribing Witnesses this 23rd day of April 1915.
' HEBRON B LAYMAN. WVitnessesr- I i 'C. MULREANY,
H. E. THOMPSON.
US2372915A 1915-04-24 1915-04-24 Method of making connecting-rods. Expired - Lifetime US1176301A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947767C (en) * 1943-10-21 1956-08-23 Daimler Benz Ag Fork connecting rods for piston engines
DE10141653A1 (en) * 2001-08-24 2003-03-06 Ina Schaeffler Kg Connecting rod of a crank mechanism
US20100139091A1 (en) * 2008-12-08 2010-06-10 Lapp Michael T Connecting rod

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947767C (en) * 1943-10-21 1956-08-23 Daimler Benz Ag Fork connecting rods for piston engines
DE10141653A1 (en) * 2001-08-24 2003-03-06 Ina Schaeffler Kg Connecting rod of a crank mechanism
US6854357B2 (en) 2001-08-24 2005-02-15 Ina-Schaeffler Kg Connecting rod of a crank mechanism
DE10141653B4 (en) * 2001-08-24 2020-08-27 Schaeffler Technologies AG & Co. KG Connecting rod of a crank drive
US20100139091A1 (en) * 2008-12-08 2010-06-10 Lapp Michael T Connecting rod
US8205332B2 (en) * 2008-12-08 2012-06-26 Mahle International Gmbh Method of forming a connecting rod from two dissimiliar materials by providing material blanks of dissimiliar material, joining the material blanks and subsequently forming the connecting rod

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